Allison Macfarlane is the chair of the Nuclear Regulatory Commission, replacing Greg Jaczko. Her term runs for a year. After rocky relations with Republicans in Congress, and indications the nuclear industry had Jaczko in its sights, he resigned May 21 effective upon a new chair taking his office. Losing no time, President Obama appointed Macfarlane May 22. Among the issues Congress took issue with were Jaczko\u2019s relatively swift reaction to address domestic safety issues after the Fukushima Daiichi meltdowns, his management style, and implementing the shutdown of the Yucca Mountain high-level radioactive waste repository. Macfarlane is set to continue the latter. As an expert in nuclear waste, she\u2019s testified that a geologic repository is the best place to store radioactive waste indefinitely--but that Yucca Mountain is not the place for it. She co-edited a book on the same subject. As far as management style, she stated she looked forward to working \u201ccollegially\u201d with commissioners. Meanwhile, the \u201clessons learned\u201d from the Fukushima disaster are still being evaluated and implemented at the commission. For instance, in California staff performed a \u201cwalkdown\u201d of the seismic safeguards at the Diablo Canyon nuclear plant July 10. Preliminary results of the hands-on inspection are expected by the end of the month.